RAM 1500 Diesel Forum banner

Cranks, Sputters, No Start

4835 Views 87 Replies 11 Participants Last post by  jhauler55
Truck: 2015 Tradesmen, 4x4, 133k miles on the O. AEM stock tune, no W58 completed as of yet. (wish i did)
Problem: Cranks, no start
Symptoms: Truck started, drove 50 feet and than stalled with the ole TPS fault on the dash HMI. No start after.

Completed items: Battery is on charger when I troubleshoot. Fuel Filter changed when problem ocured. Always on time with PM schedule. Shell Rot. 5/40 used. Mobile 5w40 was used during the Rotella shortage of 2021. NO codes for anything relating to no start. I have my typical dirty intake swirl valve codes, along with a p0128 code that I cannot fix even tho T-stat is new. 5 gallons of new fuel added to tank.

Had my ED towed to my house a day ago since it would crank but no start. It sounds like its about to take off and fire, but never does. So its not just a crank, no start. Its a crank, almost start, no start.

I will post the AlphaOBD report, but keep in mind this was preformed with a non running engine that was only cranking. I noticed on one report, it claimed I had water in the fuel. This is why I added new fuel. Reports after claim no water. Never had any kind of light and the ECM (in alphaOBD) claims the truck has driven 0km lifetime with a water warning. So, not sure why thats there. I also noticed an alternator fault on the report. Never had any voltage or charging issues so not sure what to think here. Crank signal according to AlphaOBD is not dropping and is recognized. Fuel rail says its getting pressure on A-OBD and the lift pump turns on (going by ear) for 30 seconds, primes, and shuts off.


My gut tells me its the reluctor magnet. My heart wants it to be the alternator. Could the alternator issue of been masked by a battery that was strong enough to run all the glow plugs/injectors/pumps. I am fully prepared to drop this transmission and change the part in my cold wet driveway if thats what it will take. But I dont have the time or money to be a part changing monkey. I need a surgical diagnosis before my mitts get dirty. Single father with 3 children, full custody, and this is our only vehicle. Its my bread and butter and I need it NOW!

In the meantime, Im dropping 400 dollars a week on a rental car and skipping important bills along the way. My only option really...

I have a video of the truck cranking and sputtering, and I can provide any A-OBD reports needed. Attached is a report I pulled while I was cranking away hoping for a miracle.

My next step, i guess, is to remove the starter and use a bore scope to maybe try and see the tone ring. At least that will give me a solid path forward.

Any help is appreciated.

PS: The "alternator" fault... Is it faulted because its not being run/excited?

Vehicle Line: DS - RAM 1500
Model Year: 2015
Body Style: 4-Door Pickup
Country Code: USA
Assembly Plant Data:
Normalised (Absolute) accelerator pedal position 1 for OBD tester: 0.00 %
Normalised (Absolute) accelerator pedal position 2 for OBD tester: 0.00 %
Engine speed: 0.00 rpm
Boost Pressure: 963.00 hPa
Raw value of Terminal 50 from hardware: Off
AC Fan Request: Off
Air conditioner compressor request: On
Raw signal from the digital gearbox neutral position sensor: On
Clutch switch: Off
Clutch Interlock Switch: Off
Redundant Brake Switch Status: On
Main Brake Status: On
Air mass per cylinder: 0.00 mg/hub
Vehicle speed: 2.56 km/h
Cruise control status: Not defined
4WD Switch state: Low Range
Cruise control: Standard Cruise Control
5 Button Cruise Control: No
Select Speed Control: No
Active Grille Shutter Equipped: No
Electric Thermostat Heater Equipped: No
Vacuum Pump: Yes
Air Condition: Fixed Displacement
Active Noise Cancellation: No
EGR bypass position sensor: No
Electric Coolant Valve Equipped: Yes
Stop&Start: No
DEF (urea) system: Yes
A580 Variant Equipped: No
PWM Fan: Yes
Low/High Fans: No
ABS: ABS with ESP
4 pin MAF: No
8 pin MAF: Yes
Swirl Position Sensors: Yes
Oil Vapour Pressure Sensor: Yes
EGR Out Temp Sensor: Yes
CAC In Temp Sensor: Yes
Status of Transmission type: Automatic
Lambda/Particulate filter presence: Not defined
PTC Equipped: 3 PTC heater relays, 3 heaters
Gear Shift Indicator: No
ADJ Starting Torque: 0.00 Nm
ADJ Idle Speed: 0.00 rpm
ADJ Tire circumference: 4123.20 m
MIL: Off
Engine condition status:
Regeneration Status: No
Boost control status: Disabled
EGR Control Status: Disabled
EGR cooler bypass status: Off
LSU signal is valid: Yes
Glow plugs activated: No
Water In Fuel: Not present
Main Brake Status: Pressed
Redundant Brake Switch Status: Pressed
Clutch pedal: Pressed
Fan powerstage 1st command: Not activated
Fan powerstage 2nd command: Not activated
AC requested: Not requested
AC compressor switched ON: Yes
Status of injection:
Main injection: Not present
Pilot injection 1: Not present
Pilot injection 2: Not present
Pilot injection 3: Not present
POST 1 injection status: Not active
POST 2 injection status: Not active
POST 3 injection status: Not active
POST 4 injection status: Not active
Starter Relay Status: Off
Air Condition Compressor Off: On
Crankcase Ventilation Heating: Off
Glow plugs lamp: Off
Glow plugs relay: Off
Pre-Supply Pump: Off
Fuel filter heater: Off
Fuel filter water level warning lamp: Off
Raw digital inputs & outputs:
Key status: On
Main Brake Status: Pressed
Redundant Brake Status: Pressed
Request To Switch On/Off The Main Relay: On
Control Signal for the Starter Relay: Off
Converted Analog inputs:
The Pressure at Turbine Upstream: 967.00 hPa
Sensed Value Of The Temperature At Particulate Filter Upstream: 10.06 Deg.C
Air temperature at HFM position: 14.56 Deg.C
Sensed value of environment air pressure: 970.00 hPa
Sensed battery voltage: 12440.00 mV
Sensed fuel temperature: 6.66 Deg.C
Charged Air Cooler downstream Pressure: 963.00 hPa
Sensed inlet air temperature: 5.96 Deg.C
Lambda value measured from LSU: 0.00
Air mass per cylinder: 0.00 mg/Hub
Engine oil temperature: 4.26 Deg.C
Sensed pressure downstream of the particle filter: -2.00 hPa
Maximum rail pressure during last 10 ms: 7.10 bar
Engine coolant temperature: 5.06 Deg.C
Sensed value of the temperature at Ttrbnus: 11.36 Deg.C
Temperature before OxiCat: 10.06 Deg.C
Sensed value of oil pressure: 25.00 hPa
Sensed value of actuator position without error handling: 4.99 %
Cruise control status: No Key Pressed
Accelerator pedal: potentiometer track 1: 0.00 %
Accelerator pedal: potentiometer track 2: 0.00 %
Crankcase differential pressure sensor signal: 0.03 hPa
Conditioner pressure: 3628.00 hPa
3 way Coolant valve actuator position sensor signal: 0.00 %
Temperature before Oxidation Catalyst: 8.66 Deg.C
Temperature before Particulate Filter: 9.86 Deg.C
Temperature before Turbine: 10.46 Deg.C
EGR rate into the engine: 0.00
EGR cooler downstream temperature: 5.36 Deg.C
Radiator out temperature sensor signal: -50.04 Deg.C
Charged air cooler Upstream temperature: 4.66 Deg.C
Nox concentration of Nox Sensor 1: -7.00 ppm
Nox concentration of Nox Sensor 2: -4.00 ppm
NOx emission downstream of secondary catalyst: 0.00 ppm
Offset corrected NOx signal from post NOx sensor: 0.00 ppm
Swirl valve actuator sensor position 1: 0.08 %
Swirl valve actuator sensor position 2: 36.16 %
Pressure downstream of air filter: 962.00 hPa
Relative humidity of fresh air: 51.18 %
Turbocharger position control: 84.08 %
SCR Urea Tank Temperature: 3.86 Deg.C
SCR Urea Level: 52.28 %
SCR Urea Level: 95.00 mm
Urea (Reductant) Pump Pressure: 0.00 hPa
Exhaust gas temperature Upstream SCR: 5.46 Deg.C
Raw analog inputs:
Raw Voltage Value of Particulate Filter Upstream Sensor: 811.20 mV
Raw ADC value of environment air pressure: 3831.60 mV
Raw ADC signal from environment temperature sensor: 0.00 mV
Raw ADC value of fuel temperature: 3910.00 mV
Raw value of voltage read from ADC for charged air cooler downstream pressure module: 1558.80 mV
Raw ADC value of downstream charged air temperature: 4388.20 mV
Raw voltage value lambda signal after subtraction of reference 1.5 Volt: -9.60 mV
Raw ADC value of oil temperature sensor: 4325.40 mV
Raw voltage from the ADC PFlt Differential Pressure sensor: 566.80 mV
Raw value of temperature at upstream of the oxidation catalyst: 806.40 mV
Raw voltage value of position sensor: 889.40 mV
Raw value of rail pressure: 513.00 mV
Raw ADC value of downstream engine coolant temperature sensor signal: 3416.20 mV
Turbine Upstream Temperature Sensor Voltage: 811.20 mV
Accelerator pedal: potentiometer track 1: 425.00 mV
Accelerator pedal: potentiometer track 2: 214.80 mV
Crankcase differential pressure sensor signal: 850.20 mV
Conditioner pressure: 522.80 mV
Temperature before Oxidation Catalyst: 806.40 mV
Temperature before Particulate Filter: 811.20 mV
Temperature before Turbine: 811.20 mV
EGR cooler downstream temperature: 796.60 mV
Radiator out temperature sensor signal: 4999.80 mV
Charged air cooler Upstream pressure: 4629.80 mV
Swirl valve actuator sensor position 1: 503.20 mV
Swirl valve actuator sensor position 2: 1871.60 mV
Pressure downstream of air filter: 3768.20 mV
Urea (Reductant) Pump Pressure: 0.00 mV
Exhaust gas temperature Upstream SCR: 801.40 mV
3 way Coolant valve actuator position sensor signal: 2805.20 mV
Status message for vehicle pedals:
Clutch pedal pressed: No
Accelerator pedal potentiometer 1 used: Yes
Accelerator pedal potentiometer 2 used: Yes
Accelerator pedal error condition: No
Brake Pressed: Yes
Redundant switch brake pedal pressed: Yes
Brake switch error condition: No
Throttle status:
Throttle open: No
Throttle in required position: Yes
Throttle valve in fault: No
Status message for pre-supply pump:
Pre supply pump Command On: No
Engine Crank: No
Fuel pump relay in fault: No
EGR cooler bypass status:
EGR: On
EGR in fault: No
Air flow sensor in fault: No
Status message for oil pressure switch:
Oil pressure switch: Off
Engine Running: No
Insufficient oil pressure with engine running: No
oil sensor in fault: No
Oil pressure lamp status: On
Boost control status:
Boost closed loop controller is active: No
Position controller enabled: No
Offset learning procedure already performed in this driving cycle: Yes
Gear engaged: 0
Enable Fuel Pump to Energize: On
LIN Values:
Alternator Load: 0.00 %
Alternator Load Response Ramping Time: 5.75 sec
Alternator Voltage Set Value: 0.00 mV
Engine speed: 768.00 rpm
Alternator Excitement Current: 0.00 mA
Alternator Status High Temp Fault: No
Alternator Status Mechanical Fault: Yes
Alternator Status Electrical Fault: Yes
Alternator Status Communication Fault: No
Alternator Status Timeout Fault: No
LIN output error state: No
Any Alternator Error Present: Yes
Alternator Parameters:
Current state of the LRT calculation-- engine speed is greater than threshold: No
Battery temperature: 10.06 Deg.C
Alternator Set point Voltage: 0.00 mV
Alternator load response time: 5.75 sec
Battery Voltage after Defect Detection and Handling: 12440.00 mV
Alternator Load: 0.00 %
Alternator Excitation Current: 0.00 mA
Km with 'Water in diesel' warning lamp 'ON': 0 km
Cruise control status: :
Cruise Control Speed: 0.00 km/h
Cruise Switch 1 State: No Key Pressed
Cruise Switch 2 State: No Key Pressed
Engage & Enable not Inhibited: No
Cruise Control is Off: Yes
Wheel Spin Detected: No
BRAKE SWITCH PRESSED: Yes
P/N SWITCH in P or N: Yes
Inhibit Software Declutch Detected: No
CLUTCH UP STOP SWITCH PRESSED: Yes
Vehicle speed Greater than High Limit: No
Vehicle speed Lower than Low Limit: Yes
Engine RPM Greater than High Limit: Yes
Vehicle Speed Less Than CC Minimum Set Speed: Yes
Clutch Interlock Switch Pressed: Yes
TPS Limpin: No
MAP Sensor Limpin: No
Crank Signal Intermittent: No
No Trans Bus Message: No
Trans Flt Current (OBD2): No
Cruise Switch Failed: No
Pedal Sensor Failure: No
Level1 Safety Cruise off Request: Yes
Level1 Safety Cruise Disable Request: No
Cam Signal Missing: No
Cam/Crank Signal Tolerance: No
Crank Signal Missing: No
Cruise Not Learned/Configured: No
4WD Low: No
Disengaged Due To Disenabled: No
CANCEL SWITCH PRESSED: No
BRAKE SWITCH PRESSED: No
P/N SWITCH in P or N: No
CLUTCH UP STOP SWITCH PRESSED: No
N/V > High Limit: No
N/V < Low Limit: No
Engine RPM Greater than High Limit: No
Set Attempted Below Intelligent Cruise Control (ICC) SET MPH MIN: No
Clutch Interlock Switch Pressed: No
Cruise Switch Failed: No
Cruise Disabled: No
Wheel Spin Detected: No
On/Off switch Pressed: No
TPS Limpin: No
MAP Sensor Limpin: No
Trans Flt Current (OBD2): No
No Trans Bus Message: No
Cruise Switch Failed: No
Pedal Sensor Failure: No
Level1 Safety Cruise off Request: No
Crank Signal Intermittent: No
Cruise Not Learned/Configured: No
Level1 Safety Cruise Disable Request: No
Cam Signal Missing: No
Cam/Crank Signal Tolerance: No
Crank Signal Missing: No
4WD Low: No
Auxiliary Heater Information:
Coolant Temp Limitation: 156.00 Deg.C
Actual Coolant Temp: 4.80 Deg.C
Actual Ambient Temp: 4.00 Deg.C
PTC enable automatic control status: Not requested
PTC 1 Relay Request (Bus Message Tx): Not requested
PTC 2 Relay Request (Bus Message Tx): Not requested
PTC 3 Relay Request (Bus Message Tx): Not requested
Add-on heater status (PTC relay #1 status) via CAN: Not requested
Add-on heater status (PTC relay #2 status) via CAN: Not requested
Add-on heater status (PTC relay #3 status) via CAN: Not requested
RPM Threshold Not Achieved: Yes
Fuse condition for stepwise switch-off: No
Ignition Off-Draw (IOD) Fuse Pulled: No
Battery Voltage Too Low: No
Alternator load too high: No
HVAC Rear Defeat Message: No
HVAC Front Defeat Message: Yes
Coolant Temp Too High: No
Start Delay not achieved: Yes
PTC Heater 1: Off
PTC Heater 2: Off
PTC Heater 3: Off
Fixed Displacement A/C Status:
A/C Coolant Pressure: 3600.00 hPa
A/C Pressure Upper Limit: 32800.00 hPa
AC Disabled Due To Coolant Temperature Too High: No
Defrost Selected: No
A/C Selected: No
AC requested: Yes
Status of A/C Switch: Off
Fan Request 1: Off
Fan Request 2: Off
Variable Displacement A/C Status:
A/C compressor PWM status: 0.00 %
A/C Coolant Pressure: 3600.00 hPa
A/C Pressure Upper Limit: 32800.00 hPa
Evaporator temperature: -4.80 Deg.C
Evaporator Target Temperature: 29.60 Deg.C
Ambient temperature: 4.00 Deg.C
AC Evaporator Temperature Failed: No
A/C Head Pressure Cut Out: No
AC Evaporator Temp Message Cut Out: No
AC freeze flag: No
A/C Compressor Over speed Cut Out: No
Defrost Selected: No
A/C Selected: No
AC requested: Yes
Fan Request 1: Off
Fan Request 2: Off
IMA/IVA code of injector cylinder 1 (6 Cylinder Application): 7RGK255
IMA/IVA code of injector cylinder 2 (6 Cylinder Application): 81R64A6
IMA/IVA code of injector cylinder 3 (6 Cylinder Application): ASZEA1A
IMA/IVA code of injector cylinder 4 (6 Cylinder Application): 8IHH6WA
IMA/IVA code of injector cylinder 5 (6 Cylinder Application): 78ZRYW4
IMA/IVA code of injector cylinder 6 (6 Cylinder Application): 6Y6ZZ13
See less See more
1 - 2 of 88 Posts
My truck had 133k miles when the tonering flaked out. I did not have the software patch/recall done but I did have AAA. Which was nice.
152k miles My tone wheel went out on my test drive lol. lost all power pulled onto a side street (2 blocks from home) called dealership to come get there S%&* flatbed there in 35 min. 2 weeks later tone wheel and a couple other things found while tore apart were fixed. been a great truck last year and a half went down a month ago for a valve body covered by extended warranty! So all said and done 300 out of pocket i cant complain about it.....
  • Like
Reactions: 1
Do you know how you lost your trans valve body? Rarely do i hear about 8hp70s having any valving issue. But then again, maybe its because im not lookin..
I am honestly not sure. the master tech that was working on it said he has only seen a handful fail at most. you can see my thread i created when it happened. tech just said the valves or valve were stuck causing the failure. i will not sit here and act like i 100% know the functionality of the part bc i do not. but i do know that after it being replaced, all the weird quirks were gone the hard shifting 1-2 3-4, the CLUNK going into park, park to drive or reverse. all the things i thought were just normal to an ecodiesel as like you ive heard nothing bad about the 8hp70 trans.
  • Like
Reactions: 2
1 - 2 of 88 Posts
Top